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the gust front to the southwest of the thunderstorm. The clouds had no discernible updraft on the aircraft <br />Vertical Speed Indicator (VSI) at their bases, but they became quite violent higher up. The cloud was <br />pushing erected towers against the apparent strong shear towards the parent storm that was visible in the <br />more mature towers. New growth was apparent on the northwest and the southwest flank of the storm. <br />This thunderstorm produced hail that was larger than 2 inches in diameter. <br />Cloud penetrations were made in the same cloud and each aircraft maneuver to reverse course to the <br />cloud was a procedure turn. The present analysis will focus on measurements made on a convective <br />tower building along the gust front. Eleven aircraft penetrations were made in 26 minutes on the <br />southwest flank of the mature thunderstorm (Figure 9b) from the cloud base level at an altitude of 2000 m <br />to around 6400 m. Table 6 lists the general characteristics of this cloud. <br />-3 <br /> (CDP calculated) were observed in this cloud. The values <br />Cloud liquid water contents as large as 1.9 gm <br />of liquid water content from the hotwire Liquid Water Content (LWC) sensor were within 15% of adiabatic <br />values, but near the cloud top hotwire LWC values were about 40% of the adiabatic values. The Cloud <br />Droplet Probe (CDP) concentration increases above the cloud base, with maximum observed cloud <br />-3 <br />droplet concentrations of 1950 cm around 1400 m above the cloud base level. The droplet <br />-3 <br />concentrations decrease to 575 cm at the cloud top. <br />In general, peak CDP concentrations occur when the aircraft encounters upward moving air close to the <br />cloud base, but this relationship loses its trend towards the cloud top as the cloud drafts become more <br />vigorous. The CDP Effective Diameter remains relatively constant during each penetration indicating that <br />the cloud drafts are not necessarily affecting the cloud droplet diameters. However, the largest LWC were <br />co-located with the strongest updrafts especially from the cloud base through the mid levels. <br /> <br />Figure 9a: Visible Image 14 Aug 04 23:32Z Figure 9b: NEXRAD radar image as viewed on TITAN <br />14 Aug 04 23:28Z with the research aircraft track. <br />32 <br />